<template>
    <div class="FooterMusic">
        <div class="footerLeft" @click="updateDetailShow">
            <img :src="playList[playListIndex].al.picUrl" alt="">
            <div>
                <p>{{playList[playListIndex].al.name}}</p>
                <span>横滑切换上下首哦</span>
            </div>
        </div>
        <div class="footerRight">
            <svg class="icon" aria-hidden="true" @click="play" v-if="isbtnShow">
                <use xlink:href="#icon-bofanganniu"></use>
            </svg>
            <svg class="icon" aria-hidden="true" @click="play" v-else>
                <use xlink:href="#icon-weibiaoti--"></use>
            </svg>
            <svg class="icon" aria-hidden="true">
                <use xlink:href="#icon-zu"></use>
            </svg>
        </div>
        <audio ref="audio"
            :src="`https://music.163.com/song/media/outer/url?id=${playList[playListIndex].id}.mp3`"></audio>

        <van-popup v-model:show="detailShow" position="right" :style="{ height: '100%',width:'100%' }">
            <MusicDetail :musicList="playList[playListIndex]" :play="play" :isbtnShow="isbtnShow"
                :addDuration="addDuration"></MusicDetail>
        </van-popup>

    </div>
</template>

<script>
import { defineComponent } from 'vue'

import { mapState, mapMutations } from 'vuex'

import MusicDetail from '@/components/item/MusicDetail.vue'

export default defineComponent({
    data() {
        return {
            interVal: 0
        }
    },
    computed: {
        ...mapState(['playList', 'playListIndex', 'isbtnShow', 'detailShow'])
    },
    mounted() {
        console.log(this.$refs)
        this.$store.dispatch("getLyric", this.playList[this.playListIndex].id)

    },
    updated() {
        this.$store.dispatch("getLyric", this.playList[this.playListIndex].id)
        this.addDuration()
    },
    methods: {
        ...mapMutations(['updateIsbtnShow', 'updateDetailShow', 'updateCurrentTime', 'updateDurationTime']),
        play() {
            // 判断音乐是否播放
            if (this.$refs.audio.paused) {
                this.$refs.audio.play()
                this.updateIsbtnShow(false)
                this.updateTime()// 播放就调用函数进行传值

            } else {
                this.$refs.audio.pause()
                this.updateIsbtnShow(true)
                clearInterval(this.interVal)// 暂停清楚定时器
            }
        },
        addDuration() {
            this.updateDurationTime(this.$refs.audio.duration)
        },
        updateTime() {
            this.interVal = setInterval(() => {
                this.updateCurrentTime(this.$refs.audio.currentTime)
            }, 100)
        }
    },
    watch: {
        playListIndex() {// 监听如果下标发生了改变，就自动播放音乐
            this.$refs.audio.autoplay = true
            if (this.$refs.audio.paused) {
                this.updateIsbtnShow(false)
            }
        },
        playList() {
            if (this.isbtnShow) {
                this.$refs.audio.autoplay = true
                this.updateIsbtnShow(false)
            }
        }
    },
    components: {
        MusicDetail
    }

})
</script>

<style lang="less" scoped>
.FooterMusic {
    width: 100%;
    height: 1.4rem;
    background-color: #fff;
    position: fixed;
    bottom: 0;
    border-top: 1px solid #999;
    display: flex;
    justify-content: space-between;
    padding: .2rem;

    .footerLeft {
        width: 60%;
        height: 100%;
        display: flex;
        justify-content: space-around;
        align-items: center;


        img {
            width: 1rem;
            height: 1rem;
            border-radius: 50%;
        }
    }

    .footerRight {
        width: 20%;
        height: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;

        .icon {
            width: 26px;
            height: 26px;
        }
    }
}
</style>